import java.util.LinkedList;
import java.util.Queue;

public class test {
    public static void main(String[] args) {
        MyQueue myQueue = new MyQueue();

        myQueue.offer(1);
        myQueue.offer(2);
        myQueue.offer(3);
        myQueue.offer(4);

        System.out.println(myQueue.poll());
        System.out.println(myQueue.peek());

        Queue<Integer> queue = new LinkedList<>();
    }
}
